Designs:
How many appearances would you deem sufficient?
If he did appear, and there is evidence & testimony to not only one, but numerous appearances and to numerous people who were in varied emotional states, and, the most important part, did not have the religious inclinatation to believe in the resurrection of, let alone the death of, the Messiah, why should they're testimony be dismissed?
Something happened to these people. There were numerous persons that claimed to be Messiah back in 1st century Palestine. All of them were crucified or otherwise executed. None of their followers ever made the claims that the followers of Jesus made. SOmething happened to them that radically transformed them. THe best explanation, to me, is resurrection. Show me where I am wrong and I'll change my mind.